3 years ago

Please help me I’m begging ya!!!!

Mathematics

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Artist 52 [7]3 years ago

3 0

I dont realy see can you do an other picture

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Question 5 of 10

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Step-by-step explanation:

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Simplify the expression and combine lime terms<br>. 2(x + 6) + 3x + 4

marta [7]

Answer:

5x+16

Step-by-step explanation:

2(x + 6) + 3x + 4

Distribute

2x+ 2*6 + 3x+4

2x+12 + 3x+4

Combine like terms

2x+3x +12 +4

5x+16

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Which number line shows the solution to the inequality -4x + 3 < -5

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Answer:x>2

Step-by-step explanation:

4x/4>8/4

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3 years ago

A consumer group selected 100 different airplanes at random from each of two large airlines. The mean seat width for the 100 air

Novay_Z [31]

Answer:

Decreasing the sample size decreases the width of the confidence interval.

Step-by-step explanation:

-Let s be the sample standard deviation and $\bar X$ be the sample mean.

#We calculate the 95% confidence interval for the sample size 100 as below:

$\bar X\pm z_{0.05/2}\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm 1.960\times\frac{s}{\sqrt{50}}\\\\\\=\bar X\pm 0.1960s$

#we then calculate the confidence interval of sample size =50 and of similar mean and standard deviation:

$\bar X\pm z\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm z_{0.05/2}\times\frac{s}{\sqrt{n}}\\\\\\=\bar X\pm1.960\times \frac{s}{\sqrt{50}}\\\\\\\\=\bar X\pm0.2772s$

#Notice that the smaller sample(n=50) has a narrower confidence interval.

Hence, decreasing the sample size decreases the width of the confidence interval.

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Plz help math i ned to math<br> how much oak planks are made with one oak log in cwaft mine

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Step-by-step explanation:

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